M, Rijesh, James Valder, and A O Surendranathan. 2015. “Determination of friction factor by ring compression test for Al-5Zn-1Mg using graphite and MoS2 lubricants”. Science & Technology Asia 17 (3):13-19. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41171.